20 Most Recent 1993 Jeep Grand Cherokee - Page 4 Questions & Answers

If the "Heater In Hose" gets hot, and the "Heater Out Hose" does not get hot, than either the Control Valve is sticking closed, or your heater core is plugged up with ****!

Have you used "Barrs Leak" or a simular product for a radiator leak? That will sometimes clog the heater core.

I have a 1993 Grand Cherokee, which "Normally" throws very hot air out of the heater, but lately sometimes it only throws warm air, till I make my first stop, than it gets hot.....all because the heat control valve is hanging up.

Low water in the radiator will also cause a heater to not work.....if the water level is too low to circulate to the heater.

XRM

the operators guide shows, no such fuse. the FSM book same.... the FSM is free. read it.? what does different mean,? ah 2 fuse left;right.over 100 times now) here, the first ever GC, 1993 is ZJ jeep and has full scan tool support , scan tools begin to work. in said FSM (link) click lamps then wiring chapters. click page 8w-50-2 (no fuse, it has a circuit breaker) got DRL???? up in canada its mandatory.not USA> head lights work keys in pocket, hot all the time. at batt a3 the breaker is in the Switch.IF you have DRL , NOWS the time to say you do.

if its an aftermarket unit remove it. if factory you will have to go to a shop or dealer to have it turned off, as its in the PCM/BCM.

double posted. was answered in #1 no , in fact it has no fuses, the boxes show that, zero words, head. it has a CB, a circuit breaker, the schematic i posted in your first post is ther.e i posted the free FSM , and it covers all that in post 1. and idle is a totally other complex matter. post idle in a new post. please with engine size and mileage. with all facts. (what does not idling very good mean) misfires? low idle rpm? too high.? surges.???????

stock? posted over 100 times now. http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service click AUDIO chapter, its there, and free to look.

It kind of depends on what kind of driving you're going to be using it for. Flex fans are on average a bit noisier and have a higher hp loss than a clutch. If you're using it in stop & go traffic, you'll have better cooling with the flex. It's really not a problem and more of a personal choice going with either if it's a commuter. If you're climbing rocks or off roading, I think I'd stick with the clutch. Something to think about, there's probably a reason why the manufacturers don't install flex fans oem off the line.

http://www.automotix.net/autorepair/diy/1993-jeep-cherokee-wiring_diagram.html check the above link

Transmission problem. Likely not something you can fix.

in the fuse box, marked turns.

Megan: Try this website that has diagrams of the fuse box: https://www.google.com/search?q=diagram+of+fuse+box+on+1993+Jeep+Grand+Cherokee&biw=1174&bih=493&tbm=isch&imgil=AAqI1HpjtStGlM%253A%253BSdZA11oXUl8ASM%253Bhttp%25253A%25252F%25252F4x4img.com%25252Ffuse-box-noise-jeep-cherokee.aspx&source=iu&pf=m&fir=AAqI1HpjtStGlM%253A%252CSdZA11oXUl8ASM%252C_&usg=__P71_Gqsg0UXZQm1Cueve3vPhe4A%3D&dpr=1.15&ved=0CDcQyjc&ei=IBlUVcXjCIrKsAWU24GYBw#imgrc=JdeBjlD3MG3FwM%253A%3B0JIoULySjOXJtM%3Bhttp%253A%252F%252Fi.fixya.net%252Fuploads%252Fimages%252Fzjlimited_1556.jpg%3Bhttp%253A%252F%252Fwww.fixya.com%252Fcars%252Ft9692289-1_owner_1993_jeep_grand_cherokee_laredo%3B492%3B269

If the check engine light never comes on, on the dash, with the ignition turned on, then the jeep will not start. You should try hooking up a noid light to the fuel injector wires, to see if the ecu is pulsing the injector while cranking. If the ecu does not send a pulse then the crank sensor or the ecu itself is bad and needs repair.

Two most common failures are crank position sensor and fuel pump however, without any details in you post, I could be way off...there are many items that can cause a no start. I suggest you get a chilton or haynes manual, a digital multi meter and do some testing. If you need additional help with what you find post back here. first thing you need to do is isolate the problem to either electrical or fuel, then work from there.

Check Neutral Position sensor or some Anti-Theft system activated.

Check the coil see if ur getting power to it

Check the ignition coil harness you may have a bad connection.When you turn the key on the relay ASD should click without the ASD relay operation expect no power to coil and even no fuel pump. Do this turn the key on and cycle the switch you should hear the fuel pump activate. If you dont check the fuse.For the coil to have no power you may have bad connection on the harness or connection.Go to the ignition coil on the B+ that is battery power apply battery power and see it it starts. If it doesnt you will need to inspect ignition control module

check the kickdown/throttle valve cable. It may be bound up and stuck in the maximum position giving you extremely late shifts.

There ISN"T any modulators or vac lines on any Chrysler automatics

for what there are harness sections all over the car. surely not the whole car.! but car-parts.com (wreckers net ., huge ) the dash matters.!!! go there and see used harnesses. unless $2000 new jeep harness are cheap to you.

Fuel supply, or sensors providing information to the ECU. Take by your favorite auto parts shop, ask nicely to read your error codes. That will probably give you an idea. I found with my 20 yr old car that corrosion on sensor connections caused error codes so clean and scrape to bright metal. fixed the errors and the bad behaviors caused by them.

is battery dead, but sounds to me the ASD realy drops out 1993 ZJ jeep. has no skim option,(immobilizer) options started 1998. the no starts are not related to VTSS. alarm. this car does not stop driving. via alarms. do you know the key on, off trick to get DTCs, (google that) http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service chapter 14-44 covers all DTC errors cranking or other wise. code 42? DTC its covered in the FSM , all that. work no starts first. then work back from there. after all car is dead. see VTSS here>? chapter 8Q key defeat. alarm per book. either front door or tail gauge defeats VTSs alarm. charge the battery first (main) or jump cable start car, off running donor car. run now?

Hi Dawn, I'm AL the owner of Big As Auto Repair in St Charles Mo I look forward to helping you with your issue but first, if the light is on all the time that means you have a fault code in the system that needs to be repaired. If the Check Engine Light does not come on when you turn the key on then this could be the bulb or the circuit board inside the cluster. If this is the case and it is a bad bulb you'll need to remove the instrument cluster from the vehicle and take it apart and change the bulb by turning it counter-clock-wise to remove it. Go to my website and click on "Contact Us" and tell me which issue you are having so I can help you. Click here: Auto Repair